<?php $string = "description: test1: 10 €, test2: 7.50 €, test3: 25%, test4: 30%"; $levelamt = 0.75; $description = preg_replace_callback('/(\d+(?:\.\d+)?)(\s*[€%])/i', function($matches) use ($levelamt){ return number_format(round(($matches[1] * $levelamt), 2), 2).$matches[2]; }, $string); echo $description;
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Value for `_results` contains invalid data `array`